A lognormal_distribution random number distribution produces random numbers x>0 distributed according to the probability density function
p(x|m,s)=1sx√2π⋅exp(−(lnx−m)22s2).
template<class RealType = double> class lognormal_distribution { public: // types using result_type = RealType; using param_type = unspecified; // constructor and reset functions explicit lognormal_distribution(RealType m = 0.0, RealType s = 1.0); explicit lognormal_distribution(const param_type& parm); void reset(); // generating functions template<class URBG> result_type operator()(URBG& g); template<class URBG> result_type operator()(URBG& g, const param_type& parm); // property functions RealType m() const; RealType s() const; param_type param() const; void param(const param_type& parm); result_type min() const; result_type max() const; };
explicit lognormal_distribution(RealType m = 0.0, RealType s = 1.0);
Effects: Constructs a lognormal_distribution object; m and s correspond to the respective parameters of the distribution.
RealType m() const;
RealType s() const;